What is the ESS used for?

The ESS screens for excessive daytime sleepiness by asking patients how likely they are to doze off in eight everyday situations. Clinicians use it to gauge sleep propensity, decide whether a sleep evaluation is warranted, and track changes in sleepiness over time. It supports, but does not replace, clinical assessment.

How many questions are on the ESS and how is it scored?

The ESS has eight items, each rated from 0 to 3 based on the chance of dozing off in a given situation. Adding the eight responses gives a total between 0 and 24. Higher totals indicate greater daytime sleepiness, with scores of 11 or above generally considered excessive.

What ESS score indicates a problem?

Scores from 0 to 10 fall in the normal range, while 11 or higher suggests excessive daytime sleepiness. The developer defines 11 to 12 as mild, 13 to 15 as moderate, and 16 to 24 as severe. A raised score prompts follow-up and consideration of further assessment rather than a diagnosis.

Is the ESS a diagnostic test?

No. The ESS measures a person's general level of daytime sleepiness, not its cause. A high score can point toward conditions such as sleep apnea or narcolepsy, but confirming any diagnosis requires clinical history and, often, formal sleep testing. The scale guides clinical decision-making rather than answering on its own.

Can the ESS be used to track changes over time?

Yes. Because the ESS is brief and standardized, many clinicians repeat it to monitor daytime sleepiness before and after an intervention. Comparing scores across visits helps show whether sleepiness is improving, stable, or worsening. Using the same wording each time keeps the comparison valid and meaningful.

Is the ESS copyrighted?

Yes. The Epworth Sleepiness Scale is copyrighted by Dr. Murray Johns, and its wording cannot be altered without permission. Many uses require a license, and fees may apply depending on the setting. Practices should obtain the official version and follow the licensing terms to keep the questionnaire valid.

Epworth Sleepiness Scale (ESS) | Template & auto-scoring

The Epworth Sleepiness Scale (ESS) is a brief, self-administered questionnaire that measures a person's general level of daytime sleepiness, or their likelihood of dozing off during everyday situations. Developed by Dr. Murray Johns in 1991, it asks patients to rate their chance of falling asleep across eight common activities, producing a single score that flags excessive daytime sleepiness.

Why healthcare providers use the ESS

Rapid screening. The ESS takes two to three minutes to complete and gives a quick read on whether daytime sleepiness warrants attention.
Standardized measure. It replaces vague descriptions of tiredness with a consistent, numeric score that can be compared across patients and visits.
Referral support. A raised score helps identify patients who may benefit from a sleep evaluation and prompts appropriate follow-up.
Progress monitoring. Repeating the ESS shows whether sleepiness is improving or worsening over time.
Low burden. Patients can complete it independently, making it practical for busy primary care and specialty settings.

Which settings use the ESS?

Primary care. Clinicians use the ESS to screen patients reporting fatigue, snoring, or poor sleep before deciding on referral.
Sleep medicine. Sleep clinics use it during intake and follow-up to quantify daytime sleepiness alongside diagnostic testing.
Neurology. Providers apply it when evaluating conditions such as narcolepsy or other disorders that affect wakefulness.
Pulmonology. It supports assessment of patients being evaluated for obstructive sleep apnea and related breathing disorders.

What does the ESS measure?

The ESS estimates a person's general level of daytime sleepiness by asking how likely they are to fall asleep in a range of everyday situations, rather than simply feeling tired. Because the questionnaire is copyrighted, the domains below describe the types of situations it covers without reproducing the exact item wording.

Passive, sedentary activities. Quiet situations such as sitting and reading or watching television.
Public and social settings. Sitting inactive in a public place, such as a meeting or a theater.
Travel situations. Riding as a passenger or stopping briefly in traffic during a car journey.
Restful moments. Quiet periods such as sitting after lunch or lying down to rest in the afternoon.

Scoring the ESS

Number of items: eight everyday situations.
Per-item scale: 0 to 3, where 0 means you would never doze and 3 means a high chance of dozing.
Total score range: 0 to 24, the sum of all eight items.
Score direction: higher totals indicate greater daytime sleepiness.

ESS scores reflect a person's usual level of sleepiness and can be affected by recent sleep, how each situation is interpreted, and the accuracy of self-report. A total of 11 or higher is generally considered excessive daytime sleepiness. The score guides clinical decision-making and prompts follow-up; it does not identify a cause or replace a full evaluation.

Score	Interpretation	Suggested next step
0 to 5	Lower normal daytime sleepiness	Monitor
6 to 10	Higher normal daytime sleepiness	Monitor
11 to 12	Mild excessive daytime sleepiness	Consider further assessment
13 to 15	Moderate excessive daytime sleepiness	Consider further assessment
16 to 24	Severe excessive daytime sleepiness	Consider prompt further evaluation

Best practices for administration

Set the context. Ask patients to answer based on their usual recent lifestyle, not just how they feel today.
Allow independent completion. Let patients respond on their own so answers reflect their own judgment.
Ensure all items are answered. A total requires responses to all eight situations; missing items reduce validity.
Reassess when appropriate. Repeat the ESS to track change after a shift in sleep habits or a clinical intervention.
Pair with clinical history. Interpret the score alongside symptoms, sleep patterns, and other findings.
Use the licensed version. Respect the copyright by using the official, unaltered wording.

How Zentake helps with the ESS

Automatic scoring. Totals are calculated the moment a patient submits, with no hand-tallying.
Longitudinal tracking. Re-send the ESS on a schedule and view change over time.
Before the visit. Primary care practices can have patients complete it from home on any device, so the clinician starts informed.
HIPAA compliant. Responses are encrypted, with a signed BAA on every plan.

References

The ESS was introduced by Johns MW (1991), "A new method for measuring daytime sleepiness: the Epworth sleepiness scale," Sleep, 14(6):540-545, which established the eight-item format and the 0 to 24 scoring range.

The severity bands above follow the interpretation published by the scale's developer at the official Epworth Sleepiness Scale website. Because the questionnaire is copyrighted, practices should obtain a licensed copy before administering it.

Last updated: August 2026

Epworth Sleepiness Scale (ESS)